A cell constituted by two electrodes A `(E^(@)A//A+0.35V)` and `B(E^(@)B//B=-0.42V)` Has value of `E_("Cell")^(@)` equal toA. 0.07VB. 0.77VC. `0.77V`D. `-0.07V`.

A cell constituted by two electrodes A `(E^(@)A//A+0.35V)` and `B(E^(@

1.	A cell constituted by two electrodes A `(E^(@)A//A+0.35V)` and `B(E^(@)B//B=-0.42V)` Has value of `E_("Cell")^(@)` equal toA. 0.07VB. 0.77VC. `0.77V`D. `-0.07V`.
Answer» Correct Answer - B The given electrode potentials are oxidation potentials . First of all they are dhanged to reduction potential `E_("cell")^(@)=E_(c)^(@)-E_(a)^(@)` `E_(B)^(@).^(+)._(//B)-E_(A)^(@).^(+)._(//A)` `=0.42-(-0.35)=0.77V`

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What are elementary reactions ?

A cell constituted by two electrodes A `(E^(@)A//A+0.35V)` and `B(E^(@)B//B=-0.42V)` Has value of `E_("Cell")^(@)` equal toA. 0.07VB. 0.77VC. `0.77V`D. `-0.07V`.

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